jpeg2000: split off inverse MCT decoding as Jpeg2000DSP

This makes the addition of arch optimized functions easier.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/libavcodec/jpeg2000dsp.h b/libavcodec/jpeg2000dsp.h
new file mode 100644
index 0000000000..de1ddb94cd
--- /dev/null
+++ b/libavcodec/jpeg2000dsp.h
@@ -0,0 +1,35 @@
+/*
+ * JPEG 2000 DSP functions
+ * Copyright (c) 2007 Kamil Nowosad
+ * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_JPEG2000DSP_H
+#define AVCODEC_JPEG2000DSP_H
+
+#include <stdint.h>
+#include "jpeg2000dwt.h"
+
+typedef struct Jpeg2000DSPContext {
+    void (*mct_decode[FF_DWT_NB])(void *src0, void *src1, void *src2, int csize);
+} Jpeg2000DSPContext;
+
+void ff_jpeg2000dsp_init(Jpeg2000DSPContext *c);
+
+#endif /* AVCODEC_JPEG2000DSP_H */